I had this problem like 8 months ago, and in these time i saw on a forum (that i dont remember what was) that for example if one of proxies are of Ukraine and the other ones of E.U u have to the estimate the that it would take you to travel from one side to the other xd but idk if this theory its right...
This actually happened to me but with an unimportant account by an a dumb mistake...
Once again, the account that happened to me, it did not matter so :nottodaysatan.